Pipe-coupling.



N0. 654,!3L Patented July 24, I900.

J'. BURKE.

PIPE COUPLING.

(Application filed Sept. 1, 1899.)

(No Model.)

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JAMES BURKE, or MINNEAPOLIS, MINNESOTA.

PIPE-COUPLING.

SPECIFICATION forming part of Letters Patent NO. 654,131, dated July24:, 1900.

Application filed September 1, 1899. Serial No. 729,151. (No model.)

To 00% whom it may concern.-

Be it known that I, JAMES BURKE, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements inPipe-Couplings and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention has for its object to provide an improved device forforming soldered joints between connected pipes or tubular sections; andto this end it consists of the novel means hereinafter described, anddefined in the claim.

The invention is illustrated in the accompanying drawings, wherein likecharacters indicate like parts throughout the several views.

Figure 1 shows in central longitudinal section a pair of pipe-sectionsconnected by my improved device. Fig. 2 is a transverse section on theline 00 m of Fig. 1. Fig. 3 is a similar View to Fig. 1,but illustratesa slightlymodified construction. Fig. 4 is also a view corresponding toFig. 1, but illustrating another modification of the construction. Fig.5 is a transverse section upon the line a of Fig. 4, and Fig. 6 is alongitudinal section showing the socket member of the pair ofpipe-sections shown in Fig. 1.

In Figs. 1, 2, 4:, 5, and 6 the numeral 1 indicates what may be termedthe socket or exterior member of the tubular parts to to be connected,which part we will assume to be of brass, although it might be of otherhard metal, or even of lead. The numeral 2 indicates a section of pipewhich we will assume to be of lead, although it might be of hard metal.

In Fig. 3 the numeral 3 indicates a couplingsleeve which we will assumeto be of brass or hard metal, and the numeral 4 indicates a pair ofpipe-sections which are adapted to telescope one into each end of thesleeve 3, which we will assume to be of lead.

The so-called socket-section 1 (shown in Fig. 1) and the sleeve 3 (shownin Fig. 3) are provided in the vicinity of their ends with internalannular grooves or seats in which annular strips or rings 5, of solder,are cast or otherwise fitted and secured at some suitable time prior tothe coupling thereto of the lead-pipe sections or tubular sections,which when coupled are telescoped thereinto, as shown in the drawings.It is intended to secure these solder rings 5 in position at the factoryand to supply them to the trade ready for use. Fig. 6 illustrates the socalled socket-section 1, which is shown in Fig. 1, as it would besupplied to the trade, with the solder ring 5 positioned therein. Thesesolder rings 5 may of course have any desired dimensions.

In the construction illustrated in Figs. 4 and 5 the solder, instead ofbeing secured in the socket-section 1 in the form of a complete ring, isin the form of a broken ring made up of a plurality of disconnectedsections 6, which are held in suitably-formed seats in the interior ofthe said socket 1. This construction, while not the full equivalent andfor many purposes not as good as the construction previously described,will nevertheless be efficient for many purposes. This latterconstruction will require some play or clear= ance between the sectionsto be soldered together, so as to permit the solder to'run between thesoldered or connected pipe-sections.

The important advantages derived from my invention will appear from abrief state ment of the manner in which the solder joint is formed. Itis of course a known fact that the fusing-point of'solder is muclrlowerthan that of lead pipe and of coursevery much lower than that of hardermetals, such as brass or iron.

In accordance with my invention the pipe section 2 is in the oneinstance first slipped into the socket-section 1, or in the otherinstance the pipe-sections 4 are slipped into the coupling-sleeve 3 andproperly positioned. Then to form the soldered joint heat is applied inthe one instance to the socket-section 1 and in the other to thecoupling-sleeve 3, and the solder rings 5 in the one case or thesoldered disks 6 in the other case will be melted and caused to adhereto the said pipesections 2 or 4, as the case may be. Not only is anextremely well formed soldered joint made by this operation, but thework may be very readily done by any one, as the same does not requirethe use of soldering-tools. Furthermore, the necessity of providingsolder for use in forming the joints is obviated.

From the foregoing description and statements made it will be understoodthat my invention is capable of a large range of modification and thatthe same may be used for connecting tubular or cylindrical sections ofvarious description and character.

Although not the full equivalent of the construction above described, itwould be within the scope of my invention to connect the pair oftelescoping parts by first dipping one of the same into solder toproducea lining or coating which would adhere to the pipe or telescopingsection and could be melted by the application of heat after thesections to be connected were telescoped or positioned.

It would also be within the scope of my in vention to connect othermetallic parts, such ring of solder embedded therein, whereby the a saidtubular sections to be connected may be telescoped to the desiredpositions and thereafter soldered by the application of heat,substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

JAMES BURKE. Witnesses:

MABEL M. MCGRORY, F. D. MERCHANT.

